40307056 has 20 divisors (see below), whose sum is σ = 82205800. Its totient is φ = 19092672.

The previous prime is 40307053. The next prime is 40307077. The reversal of 40307056 is 65070304.

It is a self number, because there is not a number n which added to its sum of digits gives 40307056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40307053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65991 + ... + 66598.

It is an arithmetic number, because the mean of its divisors is an integer number (4110290).

Almost surely, 2^40307056 is an apocalyptic number.

It is an amenable number.

40307056 is an abundant number, since it is smaller than the sum of its proper divisors (41898744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40307056 is a wasteful number, since it uses less digits than its factorization.

40307056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132616 (or 132610 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 40307056 is about 6348.7838205439. The cubic root of 40307056 is about 342.8680569277.

The spelling of 40307056 in words is "forty million, three hundred seven thousand, fifty-six".